html , body {
  font-size: 14px;
  padding: 0;
  margin: 0;
  font-family: "Consolas", "微软雅黑", "Heiti";
  overflow: hidden;
  user-select: none;
  width: 100%;
  height: 100%;
}
body{
  display: flex;
  display: -webkit-flex;
  flex-direction: column;
  -webkit-flex-direction: column;
  position: relative;
}

